Question about 1992 Suzuki DR 650 RS-E

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95 DR 650 running rough - 1992 Suzuki DR 650 RS-E

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Hi and welcome to FixYa,

Initially, a couple of things to explore/consider and/or try:

  • compression test;
  • check/replace sparkplug;
  • check timing;
  • rebuilt carbs;
  • check for possible air/vacuum leak.
A remote possibility is the regulator causing an increase in voltage making the CDI erratic or shuts down in any RPM above idle.

Pls post back result(s). Good luck and Thank you for using FixYa.

Posted on Jan 11, 2009

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DickCanFixIt
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SOURCE: 1995 DR 650 engines rund rough most of the time

Carburetor issues will cause that. Could be anything in the carb from worn seals to worn needles or seats. Do you have a manual for the bike? Clymers or Haynes gives a fairly detailed procedure for a carb rebuild. There is a large free manual here, not sure which year it is. Do pay close attention to which carbs they mention, I believe the carb has changed over the years.

Posted on Jan 11, 2009

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1995 Suzuki DR650 running rough


Ignition timing is preset and only very badly worn camchain or valve-train issue would have an effect.

You may have a problem with the floatbowl height.
It is an incremental fix, in that you set it and see how it responds.

The fuel availability is governed by the height of the float levels. This can be adjusted by bending the small brass tab on the float spindle. Try adding more fuel first, or bend tab upwards very slightly. you don't have to remove the carby every time, just loosen the front and back manifold clamps and rotate carby so you can acces float chamber screws. The float pin can be pulled out and tab reset. Don't forget to turn fuel off and have a spill tray ready when undoing floatbowl drainplug each time.
Site below has exploded view of the carby with part names, links to all sections of the bike.
Clean all the jets with a carburetor solvent and check fuel line for perishing. Are inlet manifolds in good condition and not have a chalky feel on the insides, they should be shiny and feel slippery for efficient results.

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http://www.cmsnl.com/suzuki-dr650-1995-rses_model13242/partslist/FIG-11.html

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1 Answer

1995 DR 650 engines rund rough most of the time


Carburetor issues will cause that. Could be anything in the carb from worn seals to worn needles or seats. Do you have a manual for the bike? Clymers or Haynes gives a fairly detailed procedure for a carb rebuild. There is a large free manual here, not sure which year it is. Do pay close attention to which carbs they mention, I believe the carb has changed over the years.

Jan 11, 2009 | 1992 Suzuki DR 650 RS-E

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